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The circumference of a circle equals 2 times pi times the radius, in this case, about 31.42 inches.

Q: Which equation could be used to find the circumference of a ball with a radius of 5 inches?

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Yes.You could also state that the circumference is directly proportional to the radius. The proportionality constant is (2 pi).

The formula for finding the circumference is the diameter times pi because the radius is half of the diameter, the diameter of this circle would be 8 8 times pi equals approximately 25.1327 Or you could leave it in terms of pi and say 8pi (using the symbol)

Formula of Circumference of a circle: 3.14*Diameter of the circle. You could also do: 3.14*3.14*radius.

Circumference is found by the equation C = 2 * pi * r, where r is the radius and pi is the constant pi. We are given the diameter. If you look at a circle, the diameter of it is the distance from one end of the circle to the other. We want the radius of the circle. The radius is the distance from any point along the circle to the center of the circle. If we let the diameter = d and the radius = r, we can write a formula for the diameter in terms of the radius. Because the radius is half of the distance of the diameter, d = 2*r 15 = 2 * r (divide both sides by 2) r = 7.5 so C = 2*7.5*pi C = 15pi Note that we could have used C = pi*d, although this is not usually how circumference is expressed.

No. To biggest circle you could draw in a square with 100in would be one with a radius of 5in (10in diameter) since the squares dimensions will be 10in x 10in. So, working out the circumference with this radius: 2 x pi x 5 = 31.4 inches, which is greater than the 30 inches you want.

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What is the 60 inch measurement? Is it the radius, the diameter? The 60 inches could also be the circumerence, except that is what you are asking for.

OK, The circumference of a circle is 2 times pi (3.14) times the radius. SO the radius is = to circumference (5cm) divided by 2 times pi. 5 divided by 6.28 = .796 time 2 gives us a diameter of = 1.59 centimeters. We could also use Pi = cicumference/diameter therefore 3.14=5/x Multiply both side by x and 3.14 x = 5 Divide both sides by 3.14 and you get x= 5 divided by 3.14 which equals 1.59 cm

Area = (radius)2 x pi Area = 82 x pi Area = 64 x pi Area ≈ 201.06 square inches

Yes.You could also state that the circumference is directly proportional to the radius. The proportionality constant is (2 pi).

Formula of Circumference of a circle: 3.14*Diameter of the circle. You could also do: 3.14*3.14*radius.

The formula for finding the circumference is the diameter times pi because the radius is half of the diameter, the diameter of this circle would be 8 8 times pi equals approximately 25.1327 Or you could leave it in terms of pi and say 8pi (using the symbol)

the circumference of a circle is 3.4 but with the radiusof 3.5 it is........................... well i was hoping you could tell me!!!:)

Circumference is found by the equation C = 2 * pi * r, where r is the radius and pi is the constant pi. We are given the diameter. If you look at a circle, the diameter of it is the distance from one end of the circle to the other. We want the radius of the circle. The radius is the distance from any point along the circle to the center of the circle. If we let the diameter = d and the radius = r, we can write a formula for the diameter in terms of the radius. Because the radius is half of the distance of the diameter, d = 2*r 15 = 2 * r (divide both sides by 2) r = 7.5 so C = 2*7.5*pi C = 15pi Note that we could have used C = pi*d, although this is not usually how circumference is expressed.

It is not possible if you only know the radius. A cylinder with a radius of 8 inches could be any height.

No. To biggest circle you could draw in a square with 100in would be one with a radius of 5in (10in diameter) since the squares dimensions will be 10in x 10in. So, working out the circumference with this radius: 2 x pi x 5 = 31.4 inches, which is greater than the 30 inches you want.

i am not sure but i could surly use some help